of likely voters shows the race between president obama and governor romney remaining up for grabs. the president leads 50% to 47%. but his three-point margin is within the poll's sampling error. our chief national correspondent john king is in denver getting ready for the debate over there. that's the site of the debate. john, take us into these numbers. what are you seeing? >> reporter: well, wolf, i can tell you this, talking to senior officials in the romney campaign, they believe after a tough week or ten days, the last several days, they have a little bit of a breeze at their back. they say the race has stabilized. you dig into the numbers. what is the most important issue in this first debate? the economy. look at this poll. which candidate would better handle the economy? the president, 49%, governor romney, 48%. a dead heat. the president has to defend his record. governor romney not only needs to attack his record but to convince voters he has a better place to take them if he wins the election. and you know this full well, the reason this debate and what both candidates